<template>
  <div class="app-container">
    <el-form :model="queryParams" ref="queryRef" :inline="true" v-show="showSearch" label-width="68px">
      <el-form-item label="用户ID" prop="userId">
        <el-input
          v-model="queryParams.userId"
          placeholder="请输入用户ID"
          clearable
          @keyup.enter="handleQuery"
        />
      </el-form-item>
      <el-form-item label="影视ID" prop="movieId">
        <el-input
          v-model="queryParams.movieId"
          placeholder="请输入影视ID"
          clearable
          @keyup.enter="handleQuery"
        />
      </el-form-item>
      <el-form-item label="评分" prop="score">
        <el-input
          v-model="queryParams.score"
          placeholder="请输入评分"
          clearable
          @keyup.enter="handleQuery"
        />
      </el-form-item>
      <el-form-item>
        <el-button type="primary" icon="Search" @click="handleQuery">搜索</el-button>
        <el-button icon="Refresh" @click="resetQuery">重置</el-button>
      </el-form-item>
    </el-form>

    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button
          type="primary"
          plain
          icon="Plus"
          @click="handleAdd"
          v-hasPermi="['system:ratings:add']"
        >新增</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="success"
          plain
          icon="Edit"
          :disabled="single"
          @click="handleUpdate"
          v-hasPermi="['system:ratings:edit']"
        >修改</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="danger"
          plain
          icon="Delete"
          :disabled="multiple"
          @click="handleDelete"
          v-hasPermi="['system:ratings:remove']"
        >删除</el-button>
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="warning"
          plain
          icon="Download"
          @click="handleExport"
          v-hasPermi="['system:ratings:export']"
        >导出</el-button>
      </el-col>
      <right-toolbar v-model:showSearch="showSearch" @queryTable="getList"></right-toolbar>
    </el-row>

    <el-table v-loading="loading" :data="ratingsList" @selection-change="handleSelectionChange">
      <el-table-column type="selection" width="55" align="center" />
      <el-table-column label="评分ID" align="center" prop="ratingsId" />
      <el-table-column label="用户名称" align="center" prop="userName" />
      <el-table-column label="影视名称" align="center" prop="movieName" />
      <el-table-column label="评分" align="center" prop="score" />
      <el-table-column label="操作" align="center" class-name="small-padding fixed-width">
        <template #default="scope">
          <el-button link type="primary" icon="Edit" @click="handleUpdate(scope.row)" v-hasPermi="['system:ratings:edit']">修改</el-button>
          <el-button link type="primary" icon="Delete" @click="handleDelete(scope.row)" v-hasPermi="['system:ratings:remove']">删除</el-button>
        </template>
      </el-table-column>
    </el-table>
    
    <pagination
      v-show="total>0"
      :total="total"
      v-model:page="queryParams.pageNum"
      v-model:limit="queryParams.pageSize"
      @pagination="getList"
    />

    <!-- 添加或修改影视评分对话框 -->
    <el-dialog :title="title" v-model="open" width="500px" append-to-body>
      <el-form ref="ratingsRef" :model="form" :rules="rules" label-width="80px">
        <el-form-item label="用户ID" prop="userId">
          <el-input v-model="form.userId" placeholder="请输入用户ID" />
        </el-form-item>
        <el-form-item label="影视ID" prop="movieId">
          <el-input v-model="form.movieId" placeholder="请输入影视ID" />
        </el-form-item>
        <el-form-item label="评分" prop="score">
          <el-input v-model="form.score" placeholder="请输入评分" />
        </el-form-item>
      </el-form>
      <template #footer>
        <div class="dialog-footer">
          <el-button type="primary" @click="submitForm">确 定</el-button>
          <el-button @click="cancel">取 消</el-button>
        </div>
      </template>
    </el-dialog>
  </div>
</template>

<script setup name="Ratings">
import { listRatings, getRatings, delRatings, addRatings, updateRatings } from "@/api/system/ratings"
import { listMovie } from '@/api/system/movie'
import { listUser } from '@/api/system/hy_user'

const { proxy } = getCurrentInstance()

const ratingsList = ref([])
const open = ref(false)
const loading = ref(true)
const showSearch = ref(true)
const ids = ref([])
const single = ref(true)
const multiple = ref(true)
const total = ref(0)
const title = ref("")

const data = reactive({
  form: {},
  queryParams: {
    pageNum: 1,
    pageSize: 10,
    userId: null,
    movieId: null,
    score: null
  },
  rules: {
    userId: [
      { required: true, message: "用户ID不能为空", trigger: "blur" }
    ],
    movieId: [
      { required: true, message: "影视ID不能为空", trigger: "blur" }
    ],
    score: [
      {
      validator: (rule, value, callback) => {
        const num = Number(value);
        if (!value) {
          callback(new Error('评分不能为空'));
        } else if (isNaN(num)) {
          callback(new Error('请输入数字'));
        } else if (num < 0 || num > 5) {
          callback(new Error('评分必须在0到5之间'));
        } else {
          callback();
        }
      },
      trigger: 'blur'
    }
  ],
  }
})

const { queryParams, form, rules } = toRefs(data)




/** 查询影视名字 */
function getMovieByIds(ids) {
  return new Promise((resolve, reject) => {
    listMovie({ ids }).then(response => {
      if (response.code === 200) {
        const map = {}
        response.rows.forEach(m => {
          map[m.movieId] = m.movieName
        })
        resolve(map)
      } else {
        reject(new Error('获取影视名称失败'))
      }
    }).catch(error => {
      reject(error)
    })
  })
}

// 查询用户名字
function getUserByIds(ids) {
  return new Promise((resolve, reject) => {
    listUser({ ids }).then(response => {
      if (response.code === 200) {
        const map = {}
        response.rows.forEach(u => {
          map[u.userId] = u.userName
        })
        resolve(map)
      } else {
        reject(new Error('获取用户名称失败'))
      }
    }).catch(error => {
      reject(error)
    })
  })
}


/** 查询影视评分列表 */
function getList() {
  loading.value = true
  listRatings(queryParams.value).then(async response => {
    let ratingsData = response.rows

    // 提取所有 movieId 和 userId
    const movieIds = [...new Set(ratingsData.map(item => item.movieId))]
    const userIds = [...new Set(ratingsData.map(item => item.userId))]

    const promises = []
    const dataMap = {}

    // 获取电影名
    if (movieIds.length > 0) {
      promises.push(
        getMovieByIds(movieIds.join(',')).then(movieMap => {
          dataMap.movieName = movieMap
        })
      )
    }

    // 获取用户名
    if (userIds.length > 0) {
      promises.push(
        getUserByIds(userIds.join(',')).then(userMap => {
          dataMap.userName = userMap
        })
      )
    }

    await Promise.all(promises)

    // 绑定 movieName 和 userName 到评分数据
    ratingsList.value = ratingsData.map(item => ({
      ...item,
      movieName: dataMap.movieName[item.movieId] || '未知',
      userName: dataMap.userName[item.userId] || '未知'
    }))

    total.value = response.total
    loading.value = false
  }).catch(() => {
    ratingsList.value = ratingsData
    total.value = response.total
    loading.value = false
  })
}

// 取消按钮
function cancel() {
  open.value = false
  reset()
}

// 表单重置
function reset() {
  form.value = {
    ratingsId: null,
    userId: null,
    movieId: null,
    score: null
  }
  proxy.resetForm("ratingsRef")
}

/** 搜索按钮操作 */
function handleQuery() {
  queryParams.value.pageNum = 1
  getList()
}

/** 重置按钮操作 */
function resetQuery() {
  proxy.resetForm("queryRef")
  handleQuery()
}

// 多选框选中数据
function handleSelectionChange(selection) {
  ids.value = selection.map(item => item.ratingsId)
  single.value = selection.length != 1
  multiple.value = !selection.length
}

/** 新增按钮操作 */
function handleAdd() {
  reset()
  open.value = true
  title.value = "添加影视评分"
}

/** 修改按钮操作 */
function handleUpdate(row) {
  reset()
  const _ratingsId = row.ratingsId || ids.value
  getRatings(_ratingsId).then(response => {
    form.value = response.data
    open.value = true
    title.value = "修改影视评分"
  })
}

/** 提交按钮 */
function submitForm() {
  proxy.$refs["ratingsRef"].validate(valid => {
    if (valid) {
      if (form.value.ratingsId != null) {
        updateRatings(form.value).then(response => {
          proxy.$modal.msgSuccess("修改成功")
          open.value = false
          getList()
        })
      } else {
        addRatings(form.value).then(response => {
          proxy.$modal.msgSuccess("新增成功")
          open.value = false
          getList()
        })
      }
    }
  })
}

/** 删除按钮操作 */
function handleDelete(row) {
  const _ratingsIds = row.ratingsId || ids.value
  proxy.$modal.confirm('是否确认删除影视评分编号为"' + _ratingsIds + '"的数据项？').then(function() {
    return delRatings(_ratingsIds)
  }).then(() => {
    getList()
    proxy.$modal.msgSuccess("删除成功")
  }).catch(() => {})
}

/** 导出按钮操作 */
function handleExport() {
  proxy.download('system/ratings/export', {
    ...queryParams.value
  }, `ratings_${new Date().getTime()}.xlsx`)
}

getList()





</script>
